Keystones — Lintel
Five GCSE retrieval questions · 6 March 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0088
Answer: 8.8 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 6x + 9
Answer: (x - 3)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 25cm, angle = 49°. Find opposite
Answer: 28.8cm -
4. Ratio Mixed ratio problems
£240.00 is shared between A and B in the ratio 2:3. How much does A receive?
Answer: £96.00 -
5. Statistics Mean
Calculate the mean of: 12, 12, 42, 39, 5, 38, 29, 26
Answer: 25.4